Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X20-20S
The AirTAC Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X20-20S is a genuine double-acting aluminum-barrel mini cylinder with a Ø20mm bore, a 20mm nominal stroke and a rear adjustable-stroke stopper — trim up to 20mm for a usable window of 0–20mm. Adjustable air cushion (both ends).
- BoreØ20 mm
- Stroke20 mm
- Adjustable0–20 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM8×1.25
- CushionAdjustable air cushion (both ends)
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X20-20S
The AirTAC MBLCJ20X20-20S is a compact double-acting aluminum mini cylinder featuring a rear stroke adjuster and tunable air cushions at both ends. It delivers 157 N of push force at 0.5 MPa. The rear stopper allows you to trim up to 20 mm of travel, creating a usable 0 to 20 mm end-position window for precise short-distance placement.
Unlike the base MBLJ which relies on a fixed rubber bumper, this model uses screw-tunable end-of-stroke deceleration to absorb kinetic energy, protecting the end covers during rapid cycling. The riveted rolling-packed barrel and 20 µm hard-chrome plated carbon-steel rod withstand harsh environments. Equipped with a built-in magnet (-S), it supports CMSG reed and DMSG/EMSG electronic sensors for position feedback.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X20-20S Technical Specifications
| Model | Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X20-20S |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder (adjustable stroke) |
| Bore size | Ø20 mm |
| Nominal stroke | 20 mm |
| Adjustable window | 0–20 mm (trim 20 mm) |
| Acting type | Double acting |
| Port size | G1/8 |
| Rod thread | M8×1.25 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Adjustable air cushion (both ends) |
| Max standard stroke | Up to 300 mm |
The rear stopper sets the end position — it is a travel stop, not a lock. Overall length = A + 2 × stroke + adjustable stroke. MBLJ/MBLCJ mounting is Basic / FA / LB only (no SDB, no back-cover code). Thread options: PT / G / NPT.
Theoretical Output Force (Ø20mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 157 N | 132 N |
| 0.7 MPa | 220 N | — |
| Max (@1.0 MPa) | 32 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a margin.
Model Code: Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X20-20S
| MBLCJ | MBLCJ aluminum-barrel adjustable-stroke mini cylinder with adjustable cushion. |
|---|---|
| 20 | Bore size in mm. |
| ×20 | Nominal stroke length in mm. |
| -20 | Adjustable-stroke amount (mm you can trim at the rear). |
| S | Optional built-in magnet for a CMSG/DMSG/EMSG sensor switch. |
Related: MBLJ (adjustable stroke, fixed bumper), MBL (fixed stroke), MBLD (double rod).
Where the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X20-20S Is Used
PCB Edge Routing
Deploys a 0-20 mm micro-adjustable stroke to drive a high-speed routing spindle against printed circuit board edges, using the 157 N push force to maintain consistent cutting depth.
Micro-valve Seating
Uses the tunable air cushion to softly seat delicate medical micro-valves at the end of travel, preventing the 8 mm rod from imparting shock loads to the ceramic valve plates.
Fiber Optic Alignment
Provides exact 0-20 mm positioning for aligning fiber optic ribbon cables in a splice enclosure, relying on the DMSG electronic sensor to confirm the trimmed end-position.
Is the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X20-20S the Right Cylinder?
For lower force requirements, stepping down is not an option as 20 mm is the smallest available bore. If your application needs more thrust, the next size up is the 25 mm bore, which provides 245 N push force at 0.5 MPa. Choose the MBLCJ over the MBLJ when your cycle speed demands adjustable pneumatic deceleration rather than a fixed bumper. Remember that the rear adjuster is a travel stop, and the cushion only decelerates; neither holds the load, so use an external locking mechanism for position holding. Mounting is limited to Basic, FA, or LB; no SDB or back-cover options exist. To replace this SKU exactly, match the 20 mm bore, 20 mm stroke, 20 mm adjust code, G1/8 PT port, and the -S magnet.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Adjustable window fits your end position
- ✓ Adjuster is a travel stop, not a lock
- ✓ Magnet (S) for sensors?
- ✓ Side load — add a guide on long strokes
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Set the rear stopper for the end position (a travel stop, not a lock).
- check Avoid side load; add an external guide on long strokes.
- check Mounting: Basic / FA flange / LB foot (no SDB, no back-cover code).
- check Installation by qualified personnel per AirTAC docs.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X20-20S FAQ
At 0.5 MPa, this 20 mm bore cylinder provides 157 N push force and 132 N pull force. At 0.7 MPa, the push force increases to 220 N. The maximum theoretical force is 32 kgf at 1.0 MPa.
The rear stroke adjuster mechanically limits travel to a 0-20 mm window, acting as a physical stop. The adjustable air cushion is a separate screw-tunable valve that controls exhaust flow to decelerate the piston near the end caps. Neither feature locks or holds the load; external mechanics are required for position holding.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC Adjustable-Stroke Cylinders
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